Hydrogen fuel dispensers are becoming a familiar sight alongside gasoline and diesel dispensers in many filling stations around the world. Fuel cell vehicles are able to pull up, connect a hose and fill up their tanks just like vehicles using traditional petroleum based fuels. The heart of a hydrogen dispenser is the point of sale flow meter. Meters must be Weights and Measures approved, tested and sealed to ensure end customers receive the amount of hydrogen they are paying for. Sold in mass (kg), Coriolis meters are ideal for the service as they read primarily in mass and have a large measurement turndown capability that can handle the flow regime of high flow at the fill start to low flow at the end. Methods have been developed to qualify Coriolis meters for H2 service using certified weigh scales and like their petroleum counterparts, hydrogen dispensers can be certified and sealed by local Weights and Measures officials, a protection for consumers.
The vast majority of hydrogen dispensers around the world are fitted with Rheonik flow meters. Dispenser manufacturers everywhere are confident that when a Rheonik meter is installed, it will provide the performance and reliability that they, their customers and the hydrogen buying public require and demand.